After following all instructions that were provided with our edible ink refill kit as instructed, it may be necessary to clean the print head if your canon printer ink cartridge is not printing properly.  This can be done by pouring hot distilled water into a cup or dish approximately 1/4" deep - it is important NOT to get any water into the canon printer ink cartridge itself.  Place the "Print-Head" (Bottom portion only and NOT the BCI-3 ink tanks where the ink exits the ink cartridge) in the HOT distilled water and let it soak for 1 minute. You will see the water solution start to cloud as the ink or combination of inks as it is heated and released from the canon ink cartridge. 

PLEASE NOTE:  The ink tank that has been refilled IS NOT what is being put in the water.  The print head is attached to the cartridge  that the  ink tank sits in.
 

If the ink is leaking out of the cartridge as fast as you are injecting it,  slow down!  It should take 5-7 minutes to fill each BCI-3  ink tank, regardless if it is color or black.  By injecting the ink too quickly, the ink isn't having time to saturate the sponge.  The pressure of the ink being injected is shooting it straight through the chamber and out the exit hole.  Inject a few CC's of ink, let the cartridge sit for a minute.  Do this until you have injected the amount of ink that the instructions call for.